|Immunogenicity of High-dose Inactivated, Split-virion Influenza Vaccine Versus Standard Fluzone Vaccine in the Elderly||
||3851||All||65 Years and older (Adult, Senior)||NCT00391053||FIM05||October 2006||July 2007||February 2008||October 23, 2006||April 14, 2016||April 30, 2010||
|2||NCT01815268||Active, not recruiting||High-Dose Influenza Vaccine in Nursing Homes||
||823||All||65 Years and older (Adult, Senior)||NCT01815268||GRC75-EXT||February 2013||July 20, 2017||May 2018||March 21, 2013||November 13, 2017||
† Study has passed its completion date and status has not been verified in more than two years.